(gprof.info)How do I?
Answers to Common Questions *************************** How do I find which lines in my program were executed the most times? Compile your program with basic-block counting enabled, run it, then use the following pipeline: gprof -l -C OBJFILE | sort -k 3 -n -r This listing will show you the lines in your code executed most often, but not necessarily those that consumed the most time. How do I find which lines in my program called a particular function? Use `gprof -l' and lookup the function in the call graph. The callers will be broken down by function and line number. How do I analyze a program that runs for less than a second? Try using a shell script like this one: for i in `seq 1 100`; do fastprog mv gmon.out gmon.out.$i done gprof -s fastprog gmon.out.* gprof fastprog gmon.sum If your program is completely deterministic, all the call counts will be simple multiples of 100 (i.e. a function called once in each run will appear with a call count of 100).
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